genirq/manage: Rework disable_percpu_irq()

Use the new guards to get and lock the interrupt descriptor and tidy up the
code.

No functional change.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lore.kernel.org/all/20250429065422.435932527@linutronix.de

Author: KAGA-KOKO

kernel/irq/manage.c

@@ -2330,15 +2330,8 @@ EXPORT_SYMBOL_GPL(irq_percpu_is_enabled);
 
 void disable_percpu_irq(unsigned int irq)
 {
-	unsigned int cpu = smp_processor_id();
-	unsigned long flags;
-	struct irq_desc *desc = irq_get_desc_lock(irq, &flags, IRQ_GET_DESC_CHECK_PERCPU);
-
-	if (!desc)
-		return;
-
-	irq_percpu_disable(desc, cpu);
-	irq_put_desc_unlock(desc, flags);
+	scoped_irqdesc_get_and_lock(irq, IRQ_GET_DESC_CHECK_PERCPU)
+		irq_percpu_disable(scoped_irqdesc, smp_processor_id());
 }
 EXPORT_SYMBOL_GPL(disable_percpu_irq);